/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 1994 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ /* All Rights Reserved */ /* * Portions of this source code were derived from Berkeley 4.3 BSD * under license from the Regents of the University of California. */ #ifndef _ARPA_NAMESER_H #define _ARPA_NAMESER_H #include <sys/isa_defs.h> #ifdef __cplusplus extern "C" { #endif /* * Define constants based on rfc883 */ #define PACKETSZ 512 /* maximum packet size */ #define MAXDNAME 256 /* maximum domain name */ #define MAXCDNAME 255 /* maximum compressed domain name */ #define MAXLABEL 63 /* maximum length of domain label */ /* Number of bytes of fixed size data in query structure */ #define QFIXEDSZ 4 /* number of bytes of fixed size data in resource record */ #define RRFIXEDSZ 10 /* * Internet nameserver port number */ #define NAMESERVER_PORT 53 /* * Currently defined opcodes */ #define QUERY 0x0 /* standard query */ #define IQUERY 0x1 /* inverse query */ #define STATUS 0x2 /* nameserver status query */ /* #define xxx 0x3 */ /* 0x3 reserved */ /* non standard */ #define UPDATEA 0x9 /* add resource record */ #define UPDATED 0xa /* delete a specific resource record */ #define UPDATEDA 0xb /* delete all nemed resource record */ #define UPDATEM 0xc /* modify a specific resource record */ #define UPDATEMA 0xd /* modify all named resource record */ #define ZONEINIT 0xe /* initial zone transfer */ #define ZONEREF 0xf /* incremental zone referesh */ /* * Currently defined response codes */ #define NOERROR 0 /* no error */ #define FORMERR 1 /* format error */ #define SERVFAIL 2 /* server failure */ #define NXDOMAIN 3 /* non existent domain */ #define NOTIMP 4 /* not implemented */ #define REFUSED 5 /* query refused */ /* non standard */ #define NOCHANGE 0xf /* update failed to change db */ /* * Type values for resources and queries */ #define T_A 1 /* host address */ #define T_NS 2 /* authoritative server */ #define T_MD 3 /* mail destination */ #define T_MF 4 /* mail forwarder */ #define T_CNAME 5 /* connonical name */ #define T_SOA 6 /* start of authority zone */ #define T_MB 7 /* mailbox domain name */ #define T_MG 8 /* mail group member */ #define T_MR 9 /* mail rename name */ #define T_NULL 10 /* null resource record */ #define T_WKS 11 /* well known service */ #define T_PTR 12 /* domain name pointer */ #define T_HINFO 13 /* host information */ #define T_MINFO 14 /* mailbox information */ #define T_MX 15 /* mail routing information */ #define T_TXT 16 /* text strings */ /* non standard */ #define T_UINFO 100 /* user (finger) information */ #define T_UID 101 /* user ID */ #define T_GID 102 /* group ID */ #define T_UNSPEC 103 /* Unspecified format (binary data) */ /* Query type values which do not appear in resource records */ #define T_AXFR 252 /* transfer zone of authority */ #define T_MAILB 253 /* transfer mailbox records */ #define T_MAILA 254 /* transfer mail agent records */ #define T_ANY 255 /* wildcard match */ /* * Values for class field */ #define C_IN 1 /* the arpa internet */ #define C_CHAOS 3 /* for chaos net at MIT */ #define C_HS 4 /* for Hesiod name server at MIT */ /* Query class values which do not appear in resource records */ #define C_ANY 255 /* wildcard match */ /* * Status return codes for T_UNSPEC conversion routines */ #define CONV_SUCCESS 0 #define CONV_OVERFLOW -1 #define CONV_BADFMT -2 #define CONV_BADCKSUM -3 #define CONV_BADBUFLEN -4 /* * Structure for query header, the order of the fields is machine and * compiler dependent, in our case, the bits within a byte are assignd * least significant first, while the order of transmition is most * significant first. This requires a somewhat confusing rearrangement. */ typedef struct { u_short id; /* query identification number */ #if defined(_BIT_FIELDS_HTOL) || defined(BIT_ZERO_ON_LEFT) /* Bit zero on left: SPARC and similar architectures */ /* fields in third byte */ u_char qr:1; /* response flag */ u_char opcode:4; /* purpose of message */ u_char aa:1; /* authoritive answer */ u_char tc:1; /* truncated message */ u_char rd:1; /* recursion desired */ /* fields in fourth byte */ u_char ra:1; /* recursion available */ u_char pr:1; /* primary server required (non standard) */ u_char unused:2; /* unused bits */ u_char rcode:4; /* response code */ #else #if defined(_BIT_FIELDS_LTOH) || defined(BIT_ZERO_ON_RIGHT) /* Bit zero on right: Intel x86 and similar architectures */ /* fields in third byte */ u_char rd:1; /* recursion desired */ u_char tc:1; /* truncated message */ u_char aa:1; /* authoritive answer */ u_char opcode:4; /* purpose of message */ u_char qr:1; /* response flag */ /* fields in fourth byte */ u_char rcode:4; /* response code */ u_char unused:2; /* unused bits */ u_char pr:1; /* primary server required (non standard) */ u_char ra:1; /* recursion available */ #else /* you must determine what the correct bit order is for your compiler */ UNDEFINED_BIT_ORDER; #endif #endif /* remaining bytes */ u_short qdcount; /* number of question entries */ u_short ancount; /* number of answer entries */ u_short nscount; /* number of authority entries */ u_short arcount; /* number of resource entries */ } HEADER; /* * Defines for handling compressed domain names */ #define INDIR_MASK 0xc0 /* * Structure for passing resource records around. */ struct rrec { short r_zone; /* zone number */ short r_class; /* class number */ short r_type; /* type number */ u_long r_ttl; /* time to live */ int r_size; /* size of data area */ char *r_data; /* pointer to data */ }; extern u_short _getshort(); extern u_long _getlong(); /* * Inline versions of get/put short/long. * Pointer is advanced; we assume that both arguments * are lvalues and will already be in registers. * cp MUST be u_char *. */ #define GETSHORT(s, cp) { \ (s) = *(cp)++ << 8; \ (s) |= *(cp)++; \ } #define GETLONG(l, cp) { \ (l) = *(cp)++ << 8; \ (l) |= *(cp)++; (l) <<= 8; \ (l) |= *(cp)++; (l) <<= 8; \ (l) |= *(cp)++; \ } #define PUTSHORT(s, cp) { \ *(cp)++ = (s) >> 8; \ *(cp)++ = (s); \ } /* * Warning: PUTLONG destroys its first argument. */ #define PUTLONG(l, cp) { \ (cp)[3] = l; \ (cp)[2] = (l >>= 8); \ (cp)[1] = (l >>= 8); \ (cp)[0] = l >> 8; \ (cp) += sizeof (u_long); \ } #ifdef __cplusplus } #endif #endif /* _ARPA_NAMESER_H */
